Chill-plate



A. MCI). GRAY.

CHILL PLATE.

APPLICATION FILED Nov.-2a.lI9Ia.

. ,322,897 Patented NIW. 25, 1919.

' `Mneiasoir nien.v GRAY, Yor ELIZABETH, NEW JERSEY.

anim-PLATE.

specication of'Letters Patent.

Patented Nov. 25, 1919.

Application sied november 23, 191s. serial No. 263,830.

To all whom t may concern: j y

Be it known that I, ALANsoNfMcD. GRAY, a citizen of the United States,residing at Elizabeth, ,New Jersey, have invented certain new andusefulImprovementsfin Chi-ll- Plates, of whichgthe followingv is a clear,full, and exact description, My invention relates to chill plates suchas are usedin connection with a series of molds, the chill plates beingsetup in'. alternation with the molds as exemplified in my United StatesPatent-No. 658,235, dated JulylO, 1900, and more particularly' in myPatent No. 1,296,652, dated March 11,1919. The invention relatesparticularly to certain improvements in. chill plates whereby theformation of air pockets may be more effectually avoided. l.

It has been foundin practice that air pockets are liable to form in thecirculating spaces or passages of the chill plates adjacent to the topthereof, resulting in more or less yirregularity in .the coolingeect ofthe plates. In order to-completelylovercome this difliculty, I haveprovided a chill plate in which there is a very small air vent formedbetween Ythe baffle plates Iconnected with theI vertical wall of thechill plate, and an important feature of my invention relates to themanner of forming these minute airvents. 'f

Referring to the drawings,

Figure 1 isa longitudinal Chill plate;

Fig. 2 is a cross-section thereof along the line A-A, Fig. 1; and

Fig 3 is a section on the line B-B,

section of the Fig. 1.

The chill plateJ may be substantially of the construction shown anddescribed in my Patent No, 1,296,652 above referred to, saidconstruction being as follows:

The plate is narrow in cross-section and rectangular in longitudinalsection, as shown, to correspond to the molds with which it is used.Said plate is composed of side walls 2 having lugs or ears 4, by whichit is supported in working position. EX- tending from the top wall 6 arebaffle plates 8 and lO'which reach to a distance short of the bottomwall 12, and extending fromv said bottom wall 12 about midway betweenbaiiie plates 8 and 10, is a baiie plate 14 extending to a distanceshort of the top wall 6.

under the the Vuse of ka 'strain of drilling without breaking and thehole made by it was necessarilyso large'that' ,it could Abe easilyclogged up by de These chill plates with their supporting ears 4 arepreferably made integral as castings. The cooling fluid which iscirculated through each of the chill plates is supplied by an inlet pipe16 passing through the bottom wall 12 vof the plate, the circulationofthe fluid being downward from the inlet pipe 16 first baffle-plate 8,up and over thesecond baille plate 14 and down and-un- Ader the thirdbaille plate 10 and-upwardly to the orifice ofa discharge pipe 18,whichalso Ypasses through the bottom plate`12. Water is preferably usedas va, ycooling fluid, al-

though of course other liquids may bey user as conditions may require.lt' has been found that the air entra-ined 1n the water tends to collectin the corners formed between the baffle-plates 8 and 10 and thejtopwall 6 ofthe chill plate.

Attempts have been made to relievethis condition by 'drilling holesinthe. baffle plates 8 and`10, said holes being madeby a. drill whichnecessarily4 passes through the side walls 2, across sidewall and baffleplate 8,V which space in 'the particular chill plate shown, is somewhatover five inches. This operation-.necessitated drill of suflicientsize-to stand the ris of variouskinds often foundin thecirculatingwater, and even by small fish,A which experience has shown are oftenpresent in the water, especially where the water is taken directly fromrivers or small streams.

In order to avoid the difliculties arising from drilling through thesidewalls land ballie plates and to otherwise improve the constructionof chill-plates, I form holes 20 in the top plate 6` in alinement withthe baffle plates 8 and 10 respectively, said holes being of a depthslightly greaterthan the thickness of the top plate 6. After these holesare formed, they are properly tapped and a plug 22 inserted which isscrew/ed down a distance such as to leave a very minute air opening atthe top of each baffle plate 8 and the space between said 10 so as toallow for the escape of air between Preferably the holes 20 are castwith'the chill plate, which plate also has the usual core holes 24toenable the core vto be removed after the plate has been cast.

It will be seen from the construction described that if there is at anytime a stop!v page inthe air vent, the vplug may be re j moved and thestoppage relieved.

Having thus described my invention, whatYA I claim anddesire to secureby Letters Patf ent is: Y,

(l. A chill plate comprisingl a hollowT re- Y, ceptacle, vertical bailleplates extending from the topV wall of said-receptacle to a distancesliortofthe opposite wall, said baffle Y and inlet and-outlet'openingsfor the coolplates directing the course of circulationof the Coolingfluid throughl V'said receptacle,

vingfluid, at least one of said baffle plates having Va minute. airventtherethrough be- 2()L Y {said-receptacle to tween thel baifle plateand thetop' wall of formed in the toprofthe receptacle.

l2. A chill plate'comprising a hollow' re-V 35v t Y t Y Y.

n 3j. `A chill'plate Vcomprising al hollowre- *wall of said receptacleto Y Y i fceptacle', vertical baie plates extending from thel top wallof said receptacle toa distance lshortlof the opposite wall, said bailleplates directing the course of circulation of the lcooling fluid'Vthrough said receptacle, inlet .and outlet openings'for the coolingfluid 30 and a minute air vent leading from one Vside 'to the other ofatleast one of said balile platesl between the baiiie plate and the top iprevent air pockets being formed vin the top of the freceptacle.

ceptacle,vertical baille plates extending from theltop wall of saidreceptacle to adistance short of the opposite'wall, said baffle platesAdirecting theoourse of circulation ofthe cooling fluid throughsaidreceptacle, inlet and outlet openings for the cooling fluid,

4the top wall .of said receptacle having a hole fforme'd therein inalinement with each of distance slightly prevent air pockets beingplates said'ballle plates, said holeextending to a air-vent acrossthebaiile plate to prevent air pockets being formed in the top of thereceptacle. Y v s 4. A chill plate formed of cast metal and comprising ahollow receptacle having vertical baliie plates extending from the topceptaole, vertical baliie plates extending fromV 1 Y the` top wall ofvsaid receptacle toa distance short of the Vopposite wall,-said bailleAplates directing theV course of circulation of thev cooling fluidthrough said receptacle, and i inlet and outlet openings forfthe coolingfluid, a plurality ofy saidbafle plates having a'minut'e air venttherethrough between each baffle Yplate and the top wallrofi saidreceptacle to prevent air'pockets being formed in the top of thereceptacle.

greaterV than-the thickness of said top wall and a plug inside' saidhole of a lengthisuchasto leave a very smally 6. A chill platecomprising ai hollow receptacle, vertical balie plates extending from, v

the top wally of said receptacle `to -af.dis

tance Vshortof the opposite wall, saidbafe plates directing the Courseof circulation'ofV inlet and outlet openingsffor' the cooling fluid, anda minute airvent leadingA from onev side to the other of a pluralityofsaid baiie between each baiiie plate and the top wall of said receptacleto prevent airxpocket's lbeing formed in the topofthe receptacle'.V

Y `Signed at New York, N. Y., thisjthday of November,`1918.rf o .Y

' AtarisoriiMcD."(YY-tV

